After having upgraded Datacom (AD or DB) to 14.0, a DBUTLTY job, that worked fine with previous release, started failing because of:
DB10059E DDNAME RESERVED FOR DATACOM AREA
A new check is in place with 14.0, which doesn't allow using DDNAME for the sequential files that can be similar to the DDNAMEs used by Datacom to reference its areas in JCL.
This check is to prevent from accidentally overwriting index or data areas.
Names with the following patterns are not acceptable for DDNAME=: